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1. WO2020115276 - A WIND TURBINE NACELLE MOUNTED COOLING SYSTEM

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[ EN ]

Claims

1. A wind turbine nacelle mounted cooling system (1) configured to be mounted on a first face (5) of a nacelle (101) of a wind turbine ( 100), the nacelle (101) being rotably connected with a tower ( 102) so that the nacelle (101) is positioned in relation to a wind direction (w), the first face (5) having a longitudinal extension (e) substantially corresponding to the wind direction (w), the wind turbine nacelle mounted cooling system (1) comprising :

a projected wind area (10) when in operation extending substantially in a perpendicula r direction from the first face (5), the projected wind area (10) is defined by at least a first cooling module ( 11) having a first cooling area (12), the projected wind area (10) is defined as a two-dimensiona l area by projecting a shape of the cooling module ( 11) on to an arbitrary plane when seen from the wind direction (w),

wherein at least a part of the first cooling area ( 12) is arranged with an angle (b) different from 90 degrees in relation to the longitudinal extension (e) of the first face (5) of the nacelle ( 101) .

2. A wind turbine nacelle mounted cooling system (1) configured to be mounted on a first face (5) of a nacelle (101) of a wind turbine ( 100), the nacelle (101) being rotably connected with a tower ( 102) so that the nacelle (101) is positioned in relation to a wind direction (w), the first face (5) having a longitudinal extension (e) substantially corresponding to the wind direction (w), the wind turbine nacelle mounted cooling system (1) comprising :

a projected wind area (10) when in operation extending substantially in a perpendicula r direction from the first face (5), the projected wind area (10) is defined by at least a first cooling module ( 11) having a first cooling area (12), the projected wind area (10) is defined as a two-dimensiona l area by projecting a shape of the cooling module on to an arbitrary plane when seen from the wind direction,

wherein the first cooling area ( 12) is defined by a height (h) and a width (w ) providing an effective cooling area (30), the effective cooling area (30) being larger than the projected wind area (10) .

3. A wind turbine nacelle mounted cooling system ( 1) according to any of the preceding claims, wherein the first face (5) has a transverse extension (t) being perpendicula r to the longitudinal extension, the cooling system comprises a second cooling modu le having a second cooling area, the first cooling module and the second cooling module being arranged adjacent to each other in the transverse extension (t) .

4. A wind turbine nacelle mounted cooling system (1) according to claim 3, wherein the second cooling area is arranged with an angle different from 90 degrees in relation to the longitudinal extension of the first face of the nacelle.

5. A wind turbine nacelle mounted cooling system (1) according to claim 3 and/or 4, wherein the first cooling area and the second cooling area together define the effective cooling area, the effective cooling area being larger than the projected wind a rea .

6. A wind turbine nacelle mounted cooling system (1) according to claims 2 and/or 5, wherein the effective cooling area (30) is 3% larger than the projected wind area (10), preferably 5% larger than the projected wind area, more preferably 10% larger than the projected wind area, most preferably more than 15% larger than the projected wind area .

7. A wind turbine nacelle mounted cooling system (1) according to claim 1 or 2, wherein the projected wind area ( 10) has an angle (a) of substantially 90 degrees in relation to the wind direction (w), at least a part of the first cooling area ( 12) is arranged with an angle (b) being different from the angle (a) of the projected wind area .

8. A wind turbine nacelle mounted cooling system ( 1) according to any of the preceding claims, wherein the angle (b) is different from a plane being perpendicula r to the longitudinal extension (e) of the first face (5) of the nacelle (101) with between 2 to 88 degrees, preferably between 14 to 86 degrees, more preferably between 20 to 65 degrees.

9. A wind turbine nacelle mounted cooling system (1) according to claim 4, wherein the angle of the first cooling area and the angle of the second cooling area define a mutual angle between the first cooling area and the second cooling area.

10. A wind turbine nacelle mounted cooling system ( 1) according to any of the preceding claims, wherein a plurality of cooling modules is arranged adjacent to each other in the transverse extension (t) of the first face.

11. A wind turbine nacelle mounted cooling system (1) according to claim 9, wherein each cooling module has a cooling area, each cooling area having an angle different from 90 degrees in relation to the longitudinal extension of the first face of the nacelle.

12. A wind turbine nacelle mounted cooling system ( 1) according to any of the preceding claims, wherein a space is created between two adjacent cooling modules, wherein an additional cooling module is arranged in the space.

13. A wind turbine nacelle mounted cooling system (1) according to any of the preceding claims, wherein each cooling module is flu idly connected with a cooling circuit configured to circulate a cooling medium so that the cooling medium may flow in the cooling module and the cooling circuit.

14. A wind turbine nacelle mounted cooling system (1) according to any of the preceding claims, wherein the cooling system is a passive cooling system.

15. A wind turbine nacelle mounted cooling system (1) according to any of the preceding claims, wherein the angle of the cooling a rea can be adj usted under operation .

16. A wind turbine nacelle mounted cooling system (1) according to any of the preceding claims, wherein the first cooling area has a curved extension, the curved extension having a plurality of tangent lines along the curved extension, each tangent line defining an angle being different from 90 degrees in relation to the longitudinal extension of the first face of the nacelle.

17. A wind turbine nacelle mounted cooling system (1) according to any of the preceding claims, wherein the cooling module ( 11) comprises at least one heat exchanger core configured to define the cooling area of the cooling module, the heat exchanger core having a core extension extending from an upwind side to a downwind side, the core extension is arranged substantially pa ra Nelly to the wind direction .

18. A wind turbine nacelle mounted cooling system ( 1) according to any of claims 3- 17, wherein an air guide is arranged between the first cooling module and the second cooling module.

19. A wind turbine nacelle mounted cooling system ( 1) according to any of the preceding claims, wherein a first row (40) of coolingmodules is arranged adjacent to each other in the transverse extension (t) of the first face (5), and a second row (41) of cooling cooling modules (11) is arranged adjacent to each other in the transverse extension of the first face in a distance from the first row in the longitudinal extension€.

20. A wind turbine (100) having a wind turbine nacelle mounted cooling system (1) according to any of the preceding claims.